leetcode hard模式专杀1269. Number of Ways to Stay in the Same Place After Some Steps

时间 2020-07-16

标签 leetcode hard 模式 number ways stay place steps 繁體版

原文原文链接

题干： https://leetcode.com/problems/number-of-ways-to-stay-in-the-same-place-after-some-steps/函数前言：这题确实TMD有点难。code 我一开始尝试用动态规划，可是没找好状态转移方程，多是直觉不太好，而后尝试用回溯法来作。blog 之因此用回溯法，是由于我把每一步的决策当作三选一的决策动做，而后经过决策树的

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1. leetcode hard模式专杀1269. Number of Ways to Stay in the Same Place After Some Steps
2. 5 ways to minimize the security risks of the cloud
3. LeetCode 1519. Number of Nodes in the Sub-Tree With the Same Label
4. leetcode hard模式专杀 805. Split Array With Same Average
5. 【Leetcode】【Hard】Valid Number
6. leetcode hard模式专杀之24 Game
7. How to become an iPhone developer in eight easy steps
8. First Steps to Scala
9. some fragment of thinking in java part5
10. Invalid update: invalid number of sections. The number of sections contained in the table view afte

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